1. Causes: 1. Congenital hypospadias with penile recurvature. 2, foreskin ties are too short, pulling the glans causing penis downward curvature. 3, penile cavernous sclerosis, the disease not only causes dorsal or lateral curvature of the penis, but also causes erection pain and sexual dysfunction. 4, abnormal development of the ventral urethral corpus cavernosum of the penis or lack of urethral corpus cavernosum. 5, abnormal development of the white membrane of the penis, due to uneven development of the white membrane of the penis, one side is too tight, one side is too loose, resulting in ventral curvature, dorsal curvature and lateral curvature of the penis. 6, penile trauma, excessive force during sex, incorrect sexual posture, resulting in penile injury, rupture of the white membrane. After the formation of crazy marks, resulting in penile curvature bad habits, such as masturbation uneven force, wear tight underwear so that the penis long-term to one side of the skew. 7, penis curvature, is to the individual body tissue cells related. Second, the symptoms: the common symptoms that lead to penile curvature are as follows 1, abnormal development of the penis spongy body. The two spongy bodies of the left and right of the penis are not symmetrical, and the penis will bend to one side when erect. If the bend is not very serious, there is no pain and discomfort when erect, does not affect sexual life do not need to make special treatment. 2, congenital malformations such as urethral cleft or hypospadias. In these patients, the opening of the urethra is not in the middle of the head of the penis, but in the coronal groove of the penis, the penile shaft, or even near the scrotum. The defective urethra is replaced by the tissue of the fibrous band, and when the penis is erect, it is pulled by the fibrous band and bent, which requires surgery. 3, accompanied by penile injury or fibrous cavernositis, penile sclerosis and other diseases, can also cause penile curvature. The angle of pathological bending is generally large and is bent upward or downward or to the left and right sides. It is generally believed that the upward bending angle of the penis after erection is less than 40°, and the downward or left-right bending angle is less than 30°, and the sexual life is satisfactory without treatment. If the bending angle is large, it should go to the male department for consultation and treatment. 4, the bending angle and direction, must be injected in the penis to make it erect to observe or ask the patient at home with a Polaroid camera to take pictures of the various angles of the penis erection to make the final diagnosis of whether to open surgery. Corrective surgery: The foreskin is removed and injected with drugs to make the penis erect or filled with a sufficient amount of saline to observe the erect and bent penis, and then the excess cavernous membrane is folded and sutured, and the angle of the bent penis is gradually corrected by using the tension caused by the non-absorbable suture tied tightly. In most of the patients, the erect penis before the surgery cannot hold its head up or be parallel to the ground, but after the surgery, it is completely changed and the fully erect penis can exceed the parallel line of the ground and even reach the abdomen, which can be observed by the patient on the operating table to see if the correction is satisfactory. Postoperative precautions: 1, three months after surgery, try to avoid cycling, sexual stimulation and fantasy, etc., to avoid repeated erection of the penis affect the wound healing; 2, keep the perineum clean, some patients can have local discomfort after surgery foreskin, scratching should be prohibited, after urination and defecation should be scrubbed clean to prevent local pollution; 3, do not hold urine, to avoid repeated erection of the penis affect the wound healing; 4, 2 to 3 months after surgery 3 months after surgery, you can take appropriate sedatives before bedtime, you can take some oral estrogen for a short time to avoid pain and bleeding caused by penile erection.